210716540 has 12 divisors (see below), whose sum is σ = 442504776. Its totient is φ = 84286608.

The previous prime is 210716537. The next prime is 210716543. The reversal of 210716540 is 45617012.

It is an interprime number because it is at equal distance from previous prime (210716537) and next prime (210716543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210716543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5267894 + ... + 5267933.

It is an arithmetic number, because the mean of its divisors is an integer number (36875398).

Almost surely, 2^210716540 is an apocalyptic number.

210716540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210716540 is an abundant number, since it is smaller than the sum of its proper divisors (231788236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210716540 is a wasteful number, since it uses less digits than its factorization.

210716540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10535836 (or 10535834 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 210716540 is about 14516.0786715972. The cubic root of 210716540 is about 595.0674687516.

The spelling of 210716540 in words is "two hundred ten million, seven hundred sixteen thousand, five hundred forty".